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Cerebrotendinous xanthomatosis (CTX), also called cerebral cholesterosis, [1] is a rare inborn bile acid metabolism disorder caused by autosomal-recessive mutations in the CYP27A1 gene. [2] CTX is characterized by a wide range of symptoms, including neurological and non-neurological issues.
A Cochrane review found little to no difference in visual acuity as a function of the size of incisions made for phacoemulsification in the range from ≤ 1.5 mm to 3.0 mm. [57] Extracapsular cataract extraction (ECCE) consists of removing the lens manually, but leaving the majority of the capsule intact. [58]
Prevalence of cataract considerably varies by age group, as well: for ages 50–59, it is 7.88%; for ages 60–69, it is 24.94%; for ages 70–79, it is 51.74%; in people over 80 years old, it is 78.43%. The overall cataract-surgery coverage rate was 9.19%. The prevalence of cataract and cataract surgical coverage also significantly varies by ...
Cataract surgery is generally performed by an ophthalmologist in an out-patient setting at a surgical centre or hospital. Local anaesthesia is normally used; the procedure is usually quick and causes little or no pain and minor discomfort. Recovery sufficient for most daily activities usually takes place in days, and full recovery takes about a ...
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Cataract surgery is the removal of the natural lens of the eye that has developed a cataract, an opaque or cloudy area. [3] Over time, metabolic changes of the crystalline lens fibres lead to the development of a cataract, causing impairment or loss of vision.
The cataract is removed from the capsule and anterior chamber using hydroexpression [Note 3] viscoexpression, [Note 4] or more-direct mechanical methods. [4] [13] [14] The extraction of the cataract must be done with due care so as not to compromise the integrity of the tunnel; the endothelium and capsule are also vulnerable to injury.
A. Michael A'Hearn; Hubertus Antonius van der Aa; Youssef Aallaa; Said Aallaa; Frank Aarebrot; Anne Aaserud; Paul D. Aasness; Henedina Abad; Ivan Abadzhiev; Magdalena ...